Calipers and dividers.



(No Model.

avdzfi C. E. BICKEL.

CALIPERS AND DIVIDERS.

Apphcabion filed may 8. 1901.,

Patented Dec. 24. 190i.

ilrnrsn S reams Farsi r BICKEL, OF SHELBURNE FALLS, MASSACHUSETTS.

CizLlPERS AND DlVlDERS.

SPECLFIGATIGIE forming partof Letters Patent No. 689,781, dated December 24; 19:3

Application filed May 8,1901 Serial No. 59,303. (No model.)

, e T0 (tZZ whom it may conserve;

Be it known that l, Casrnn E. BICKEL, a

citizen of the United States, residing at Shel- I of the invention, such as will enable others skilled in the art to which it oppertains to make and use the This invention relates to cal l1 ='s, dividers, and similar measuring instruments.

The object of my invention to provide for gulchy and accurately adj nsting and settingin position the legs of calipers, dividers, and the like.

A more especial object is to provideaquickmotion divided not or device ha 'ing pivoted jaws, with interior screv 'eaded portions tapered or conical inner .ids for hearing against a conical cup or wa her and rearextensions, said jaws'heing pivoted in a slotted disk for engaging vri h or sliding J freely'on a screw-threaded stem to quickly adjust the legs of the instrument eithe'r'toward or from each other and hold them in the desired position. 1

The parts and combinations parts constituting my invention will he selforth in the claims.

I'Wlll describe the details of construction of my improved device by reference to the accompanying drawings, in which- Figure 1 represents an elevation of a pair of calipers. Fi 2 represents a sectional detail view, on an enlarged scale, showing my improved devices. Fig. 3 represents a top plan view and an inner face view of one of the jaws of the divided not. Fig. 4 represents a top plan view of the slotted disk. Fig. 5 represents a front end view of the divided not with the jaws in position.

The calipers shown in Fig. 1 are constructed of the usual form and are composed of the two legsiA A, having near their upper ends and inner faces suitable transverse grooves a for receiving the pivotal pin 1). On their exterior faces and just above the pin 1) the legs are provided with. transverse grooves a for receiving the ends of the circular or crescent shaped spring 15, which always acts to force the legs A A apart. In order that the l' may be spread apart, the upper ends thei of above the pivot are beveled or inclined ontward, as shown. A short distance below the pivotal pin 1) the leg A is provided with a socket or opening 0 for receiving the end of the screw-stem (J, whichlatter is pivotally connected in said socket b the iransverse pin 12. The leg A is provided with transverseopsning'c, through which is passed the screw-stem C, said opening being reamed out for permitting free movement of the leg over "the screw-stern. .Irly dividedchick-motion not F is placed uponthe enter free end oi the screw-stein G and isso conz-itrncted as to permit of quick adjustment upon any part of said stem for quickly adjusting the legs of the calipers toward or from each other in any de sired position. This quick-motionnnt cos;-

strncied of a disk D, a transverse central slot d, in which 'aivotally connected the jaws E E. Each jaw forms onohalii ()5 the nut and lS'SGRilCllOlllzll upon its outer surface and has an inner tapered or conical end 5, rearwardly-er;tending stem c, and two'lateral shoulders e. The inner face of each j aw L is provided with screw-threaded groove f for engaging the screw-threads of the stem 0. J ust back of the shoulders c the stem. is provided with aotransverse pivotal hole 6". "The disk D is also provided with transverse holes for the pivotal pins, by means of which the jaws E are p'ivotally connected. in the slot (1. The stems in of the jaws are set into the slot (Z very near to the shoulders e", just so that the jaws may have a slight tilting movement inlhc disk D Theshonlders e" serve to arrest the lateral motion ofthe jaws oybearing against the inner face of the disk. The inner ends of the two jaws may be readily pressed inward toward each other, so that their screw-threaded portion f will engage wiEh the screw-stein C. This engagement of the parts is eifected by means of the conical cup or washer'h, which is made with a central opening and placed with its smaller end adjacent to the leg A of the calipers, so as to slightly rest in the opening 0. Since the leg A 1s always pressed outward by means of the spring 13, it will press the cup it against the conical or tapered e ds 6 of the jaws E, causing said jaws to cl ly embrace the screwstem O and automatically engage the screwthreaded parts fwith the screw-threads of saith stem. The rearwardly-projecting stems e e of the jaws project far enoughbeyond the disk D tb be readily pressed by the thumb and finger'ior releasing the jaws from the ecrewstem 0. I I

Whenever it is desired to move the legs A A of the ealiperainward or outward and set ,them in a new position,

from the tapered ends of the jaws.

pressed inward, thereby 'e of the jaws and engage them with the screwstem. The divided nut being engaged with the screw-stem, it may be turned thereon,

either forward or backward for line adjustment. of the legs of the calipers or dividers. By means of the rearwm-dly-projecting stems e the screw-threaded portions of the jaws may be raised entirely free from the screwthreads of thestem- C, so that the threads of the jaws will not drag over the threads of the stem and wear them down, and also by means of said disk, substantia p 2; The combination with a screw'stem and of such stems the'divided nut'can he more quickly and conveniently manipulated for ad-' justing' it inthe desired posit on. i Y

The parts are all simple in construction and can be quickly and conveniently operated.

Having described my invention, what I claim, and desire to secure by'Lette'rs Patent,

n i 1 I 1. In a quick-motion nut, the'co'mbination with a slotted disk, of jaws having conical outer surfaces and interior serew-th grooves at their inner ends, pivoted in said slot, and having stems e firojeegngraiilzatelae rear y as ese a cup, of a quick-motion nnteomposed of a slotted dish twc jaws pivotedthemin and havinginterior screw-threaded portions, and conical orftapered inner ends, for hearing in said cup, substantially as'deseribed.

3. in calipers or dividers, the combination with the screw-stem ,of aenni'calcu p or washer, and a'dividedennt consisting of a slotted disk, two jaws pivoted therein'and having interior screw-threads, conical inner ends fonbea'ring in said cup, and rearward projections, substantially as described.

, in-testimony whereof I afilx my signature in presence of two witnesses.

7 CASPER E. BICKEL. Witnesses:

Memos Z. Woonwaan, J, 0.}1VINTERHALDER, 

